Internal multipathing with STMS on Solaris8

michael_warnock at vanguard.com michael_warnock at vanguard.com
Wed Mar 7 13:00:33 EST 2007


Hello --

Solaris 8
Sunfire V890
SVM for our boot disk
======================

We currently use MPXIO to multipath to our EMC devices.
With the V890 we now have 6 internal disks with an internal controller.
I want to use MPXIO to manager my local disks ( boot disk included ) and
take advantage of the ability to "split" the controllers.

my internal controllers are c1 and c2 -- pointing to same device

FORMAT with no MPXIO:

0 & 6 are the same device
1 & 7 are the same device
etc...

       0. c1t0d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087968d8f,0
       1. c1t1d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087962ce5,0
       2. c1t2d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087966625,0
       3. c1t3d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087969061,0
       4. c1t4d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087965fa9,0
       5. c1t5d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087964d51,0

       6. c2t0d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 9,700000/pci at 3/SUNW,qlc at 4/fp at 0,0/ssd at w2200000087968d8f,0
       7. c2t1d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 9,700000/pci at 3/SUNW,qlc at 4/fp at 0,0/ssd at w2200000087962ce5,0
       8. c2t2d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 9,700000/pci at 3/SUNW,qlc at 4/fp at 0,0/ssd at w2200000087966625,0
       9. c2t3d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 9,700000/pci at 3/SUNW,qlc at 4/fp at 0,0/ssd at w2200000087969061,0
      10. c2t4d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 9,700000/pci at 3/SUNW,qlc at 4/fp at 0,0/ssd at w2200000087965fa9,0
      11. c2t5d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 9,700000/pci at 3/SUNW,qlc at 4/fp at 0,0/ssd at w2200000087964d51,0

I enable MPXIO

       0. c1t0d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087968d8f,0
       1. c1t1d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087962ce5,0
       2. c1t2d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087966625,0
       3. c1t3d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087969061,0
       4. c1t4d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087965fa9,0
       5. c1t5d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /pci at 8,600000/SUNW,qlc at 2/fp at 0,0/ssd at w2100000087964d51,0

      10. c8t2000000087962CE5d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /scsi_vhci/ssd at g2000000087962ce5
      11. c8t2000000087968D8Fd0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /scsi_vhci/ssd at g2000000087968d8f
      12. c8t2000000087964D51d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /scsi_vhci/ssd at g2000000087964d51
      13. c8t2000000087965FA9d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /scsi_vhci/ssd at g2000000087965fa9
      14. c8t2000000087966625d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /scsi_vhci/ssd at g2000000087966625
      15. c8t2000000087969061d0 <SUN146G cyl 14087 alt 2 hd 24 sec 848>
          /scsi_vhci/ssd at g2000000087969061

However, when I run a luxadm display I only see one path.

 # luxadm display /dev/rdsk/c8t2000000087962CE5d0s2
DEVICE PROPERTIES for disk: /dev/rdsk/c8t2000000087962CE5d0s2
  Vendor:               HITACHI
  Product ID:           HUS1014FASUN146G
  Revision:             2A08
  Serial Num:           27TXE8ZK
  Unformatted capacity: 140009.438 MBytes
  Read Cache:           Enabled
    Minimum prefetch:   0x0
    Maximum prefetch:   0xffff
  Device Type:          Disk device
  Path(s):

  /dev/rdsk/c8t2000000087962CE5d0s2
  /devices/scsi_vhci/ssd at g2000000087962ce5:c,raw
   Controller           /devices/pci at 9,700000/pci at 3/SUNW,qlc at 4/fp at 0,0
    Device Address              2200000087962ce5,0
    Host controller port WWN    210100e08ba84ed4
    Class                       primary
    State                       ONLINE

===========

stmsboot -L
Version: 1.7
non-STMS device name                    STMS device name
------------------------------------------------------------------
/dev/rdsk/c1t0d0                /dev/rdsk/c8t2000000087968D8Fd0
/dev/rdsk/c1t1d0                /dev/rdsk/c8t2000000087962CE5d0
/dev/rdsk/c1t2d0                /dev/rdsk/c8t2000000087966625d0
/dev/rdsk/c1t3d0                /dev/rdsk/c8t2000000087969061d0
/dev/rdsk/c1t4d0                /dev/rdsk/c8t2000000087965FA9d0
/dev/rdsk/c1t5d0                /dev/rdsk/c8t2000000087964D51d0

stmsboot -l 1
Version: 1.7
non-STMS device name                    STMS device name
------------------------------------------------------------------
/dev/rdsk/c1t0d0                /dev/rdsk/c8t2000000087968D8Fd0
        Warning: c1t0d0 is being used by a Volume Manager.

/dev/rdsk/c1t1d0                /dev/rdsk/c8t2000000087962CE5d0
/dev/rdsk/c1t2d0                /dev/rdsk/c8t2000000087966625d0
/dev/rdsk/c1t3d0                /dev/rdsk/c8t2000000087969061d0
/dev/rdsk/c1t4d0                /dev/rdsk/c8t2000000087965FA9d0
/dev/rdsk/c1t5d0                /dev/rdsk/c8t2000000087964D51d0

=============

pssna052:root-(/kernel/drv) stmsboot -e
Version: 1.7
Error: /dev/md/dsk/d0 is not a STMS device
pssna052:root-(/kernel/drv) echo $?
1

=============


Michael Warnock
UTS/x38031


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